Play more Nonograms
Unlimited nonograms in three sizes, 10x10, 15x15 and 20x20, at four levels. Every one is line-solvable; the level says how far along a line you need to look, from simple overlaps to checking every arrangement.
This puzzle
Loading ยท the grid and its level
(a small spoiler)
Checked: exactly one solution, reachable by logic. The level is the hardest technique our solver needed, not the grid size.
Settings
Rule breaks (a clue the line can no longer fit) always show in red. "Show mistakes" also marks cells that disagree with the solution.
How the levels differ
Easy grids give way to the overlap of a long block with itself. Medium ones need you to work around crossed cells. Hard ones use the filled cells you already have to pin blocks in place. Expert ones need that many times over, or a full check of every way a line can be arranged.
| Size | Level | Puzzles | Median steps | Need a tier-3 or harder technique |
|---|---|---|---|---|
| 10x10 | Easy | 50 | 24 | 0% |
| 10x10 | Medium | 50 | 32 | 0% |
| 10x10 | Hard | 50 | 39 | 100% |
| 15x15 | Easy | 50 | 45 | 0% |
| 15x15 | Medium | 50 | 54 | 0% |
| 15x15 | Hard | 50 | 69 | 100% |
| 15x15 | Expert | 50 | 83 | 100% |
| 20x20 | Medium | 50 | 76 | 0% |
| 20x20 | Hard | 50 | 94 | 100% |
| 20x20 | Expert | 50 | 125 | 100% |
Source: the Gridaday bank, 500 puzzles of Nonogram graded by our solver; data as of 2026-10-17.
Challenge a friend
After you solve a puzzle, "Challenge a friend" copies a link to the same Nonogram with your time. Your friend gets exactly your grid; nothing else is shared, and nothing goes through our servers.